Sep 3, 2025 · ADHD Defined: A neurodevelopmental disorder marked by persistent inattention, hyperactivity, and impulsivity that affects daily life. The condition can be diagnosed in childhood or …

Attention deficit hyperactivity disorder (ADHD) [1] is a neurodevelopmental disorder characterised by symptoms of inattention, hyperactivity, impulsivity, and emotional dysregulation that are excessive …

NIMH researches attention-deficit/hyperactivity disorder (ADHD). Find resources on the signs and symptoms of ADHD and potential treatments and therapies.

Nov 25, 2025 · Read about ADHD, its types, symptoms, possible risk factors, screening, treatment, and CDC's work.

Jan 23, 2026 · ADHD is the most commonly diagnosed mental disorder in children. Find out the symptoms in children and adults, types, causes, diagnosis, treatment, and outlook.

Mar 7, 2025 · Attention-deficit/hyperactivity disorder, also called ADHD, is a long-term condition that affects millions of children. It often continues into adulthood. ADHD includes a mix of ongoing …

Learn about ADHD including symptoms, risk factors, treatment options and answers to your questions.

Children and Adults with Attention-Deficit/Hyperactivity Disorder (CHADD) is the nation's leading nonprofit organization serving people affected by ADHD.

The Adult ADHD Self-Report Scale (ASRS-v1.1) Symptom Checklist was developed in conjunction with the World Health Organization (WHO), and the Workgroup on Adult ADHD.

Jan 5, 2026 · Attention-deficit/hyperactivity disorder (ADHD) causes symptoms that begin in early childhood.